Institution: | (1) Department of Economics and Business Management, Yamagata University, 1-4-12, Kojirakawa-cho, 990-8560 Yamagata-shi, Japan;(2) Department of Management Science and Engineering, Akita Prefectural University, 015-0055 Yulihonjo, Japan;(3) Department of Systems Engineering, Northeastern University, 110006 Shenyang, China;(4) School of Information, Central University of Finance and Economics, Beijing, China; |